https://itnext.io/part-1-building-a-progressive-web-application-pwa-with-angular-material-and-aws-amplify-5c741c957259? This is the first of a series of posts outlining how to build a multi-platform Progressive Web Application (PWA) supporting mobile and desktop environments. Part 1 (your are here): Bootstrap an application with Angular/Material, a web application manifest, service worker, icons and add to home screen functionality for iOS (Safari), Android (Chrome), and desktop deployed